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Acura RSX Honda Integra. Manual - part 160

０１

Ｓ６Ｍ６ＡＺＦＡ２０３３６１１４８０６ＦＡＡＴ００

−

2002-2004 models

YES

11-346

Idle Control System

Brake Pedal Position Switch Signal Circuit Troubleshooting

ECM/PCM CONNECTORS

A (31P)

E (31P)

LG1 (BRN/YEL)

BKSW (WHT/BLK)

1. Check the brake lights.

Inspect the brake pedal position switch

(see page 19-4).

Go to step 2.

2. Press the brake pedal.

Go to step 3.

Go to step 4.

3. Measure voltage between ECM/PCM connector

terminals A24 and E22 with the brake pedal
pressed.

The brake pedal position switch signal is

OK.

Repair open in the wire between the ECM/

PCM (E22) and the brake pedal position switch.

4. Inspect the No. 7 HORN/STOP (15 A) fuse in the

under-hood fuse/relay box.

Repair open in the wire between the brake

pedal position switch and the No. 7 HORN/STOP
(15 A) fuse. Inspect the brake pedal position switch
(see page 19-4).

Repair short in the wire between the ECM/

PCM (E22) and the No. 7 HORN/STOP (15 A) fuse.
Replace the No. 7 HORN/STOP (15 A) fuse.

Wire side of female terminals

Ar e the br ake lights on without pr essing the br ake
pedal?

Do the br ake lights come on?

Is ther e batter y voltage?

Is the f use OK ?

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０１

０２

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−

2005-2006 models

YES

11-347

ECM/PCM CONNECTOR E (31P)

BKSW (WHT/BLK)

ECM/PCM CONNECTOR E (31P)

BKSW (WHT/BLK)

BRAKE PEDAL POSITION
SWITCH 4P CONNECTOR

BKSW (WHT/BLK)

1. Turn the ignition switch ON (II).

2. Check the BRAKE SWITCH in the DATA LIST with

the HDS.

Go to step 3.

Inspect the brake pedal position switch

(see page 19-4).

3. Press the brake pedal, and check the BRAKE

SWITCH in the DATA LIST with the HDS.

The brake pedal position switch signal circuit

(BKSW line) is OK.

Go to step 4.

4. Turn the ignition switch OFF.

5. Jump the SCS line with the HDS.

6. Disconnect the brake pedal position switch 4P

connector.

7. Disconnect ECM/PCM connector E (31P).

8. Check for continuity between ECM/PCM connector

terminal E22 and body ground.

Repair short in the wire between the ECM/

PCM (E22) and the No. 7 HORN, STOP (15 A) fuse.
Replace the No. 7 HORN, STOP (15 A) fuse.

Go to step 9.

9. Check for continuity between ECM/PCM connector

terminal E22 and brake pedal position switch 4P
connector terminal No. 2.

Repair open in the wire between the brake

pedal position switch and the No. 7 HORN, STOP
(15 A) fuse. Inspect the brake position switch
(see page 19-4).

Repair open in the wire between the ECM/

PCM (E22) and the brake pedal position switch.

Wire side of female terminals

Does it indicate OF F ?

Does it change to ON?

Is ther e continuity?

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０１

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±
±

−

±
±

−

±
±

2002-2004 models

2002-2006 models

Idle speed should be:
K20A2 engine:

700

50 rpm

K20A3 engine:

M/T

700

50 rpm

A/T

700

50 rpm (in Park or neutral)

K20Z1 engine:

800

50 rpm

Idle speed should be:
K20A2 engine:

780

50 rpm

K20A3 engine

2002-2004 models:

M/T

720

50 rpm

A/T

720

50 rpm (in Park or neutral)

K20Z1 engine:

850

50 rpm

K20A3 engine

2005-2006 models:

M/T

700

50 rpm

A/T

700

50 rpm (in Park or neutral)

11-348

Idle Control System

Idle Speed Inspection

NOTE:

• Leave the idle air control (IAC) valve connected.
• Before checking the idle speed, check these items:

– The malfunction indicator lamp (MIL) has not been

reported on.

– Ignition timing
– Spark plugs
– Air cleaner
– PCV system

• Pull the parking brake lever up. Start the engine, and

make sure the headlights are off.

1. Disconnect the evaporative emission (EVAP)

canister purge valve 2P connector.

2. 2002-2004 models: Connect a tachometer (A) to the

test tachometer connector (B), or connect the HDS
or a scan tool to the data link connector (DLC) (C)
located under the driver’s side of the dashboard.

3. 2005-2006 models: Connect the HDS to the data link

connector (DLC) under the driver’s side of the
dashboard.

4. Start the engine. Hold the engine speed at

3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle.

5. Check the idle speed without load conditions:

headlights, blower fan, radiator fan, and air
conditioner off.

6. Let the engine idle 1 minute with high electric load

(A/C switch ON, temperature set to Max Cool,
blower fan on High, rear window defogger ON, and
head lights on high beam).

NOTE: If the idle speed is not within specification,
do the ECM/PCM idle learn procedure, 2002-2004
models (see page 11-349), 2005-2006 models
(see page 11-349). If the idle is still out of
specification, go to the symptom troubleshooting.

7. Reconnect the EVAP canister purge valve 2P

connector.

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Ｓ６Ｍ６ＡＡＬＡ２０３３６１２４６０１ＢＡＡＴ１０

2002-2004 models

Procedure

2005-2006 models

Procedure

11-349

ECM/PCM Idle Learn Procedure

The idle learn procedure must be done so the ECM/PCM
can learn the engine idle characteristics.

Do the idle learn procedure whenever you do any of
these actions:

• Disconnect the battery.
• Replace the ECM/PCM or disconnect its connector.
• Replace or clean the throttle body.
• Reset the ECM/PCM.

NOTE: Erasing DTCs with the HDS does not require
you to do the idle learn procedure.

• Remove the No. 6 ECU (ECM/PCM) (15 A) fuse from

the under-hood fuse/relay box.

• Remove the No. 19 battery (100 A) fuse from the

under-hood fuse/relay box.

• Remove PGM-FI main relay 1 (FI MAIN).
• Remove any of the wires from the under-hood fuse/

relay box

• Disconnect any of the connectors from the

under-hood fuse/relay box.

• Disconnect the connector between the engine

compartment wire harness and ECM/PCM wire
harness.

• Disconnect the G2 terminal from the transmission

housing.

• Disconnect the G1 terminal from the body.
• Disconnect the G101 terminal from the water passage.

1. Start the engine. Hold the engine speed at

3,000 rpm without load (in park or neutral) until the
radiator fan comes on, or until the engine coolant
temperature reaches 194 °F (90 °C).

2. Let the engine idle for about 5 minutes with the

throttle fully closed.

NOTE: If the radiator fan comes on, do not include
its running time in the 5 minutes.

The idle learn procedure must be done so the ECM/PCM
can learn the engine idle characteristics.

Do the idle learn procedure whenever you do any of
these actions:

• Replace ECM/PCM.
• Reset ECM/PCM.
• Update ECM/PCM.

NOTE: Erasing DTCs with the HDS does not require
you to do the idle learn procedure.

• Replace or clean the throttle body.

1. Make sure all electrical items (A/C, audio, rear

window defogger, lights, etc.) are off.

2. Reset the ECM/PCM with the HDS.

3. Turn the ignition switch ON (II), and wait 2 seconds.

4. Start the engine. Hold the engine speed at

3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, or until the engine coolant
temperature reaches 194 °F (90 °C).

5. Let the engine idle for about 5 minutes with the

throttle fully closed.

NOTE: If the radiator fan comes on, do not include
its running time in the 5 minutes.

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